Additives for Plastics by J. à těpek, H. Daoust (auth.) PDF

By J. à těpek, H. Daoust (auth.)

ISBN-10: 144198481X

ISBN-13: 9781441984814

ISBN-10: 1461264170

ISBN-13: 9781461264170

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9% by weight. D, Other polymers, 6% by weight [5]. A A main function of lubricants is to prevent polymers that have a tendency toward tackiness from sticking on metallic parts of processing machinery; this is external lubrication. Another important function is to provide internal lubrication to the polymer under processing to improve the free flow ofthe melt bulk polymer by reducing friction between chain segments. This allows, for example, the operation of the mixing process at a higher temperature for a better homogenization of the mixture of the polymer with additives.

2. , in contact with the plastic material. 5. Volatility of some plasticizers in plasticized PVC Plasticizer DCP DOP Dicyclohexyl phthalate DBS DOS Dibenzyl sebacate Source: Ref. 70. 8 32 1: Plasticizers 3. Contact with other materials in which the plasticizer is soluble and can easily penetrate. 4. Reaction of plasticizer with another substance. This depreciation of plastics materials is difficult to avoid. When necessary , it is possible in some cases to replace volatile plasticizers by macromolecular compounds, such as polyesters, poly(ethylene glycol) derivatives , epoxides, BAN rubbers, and so on.

Plast. Encycl. 56, 198 (1979-1980) 5. Pfahler, G. , Riedel, T. : Kunststoffe 66, 694 (1976) 6. Martino, R. : Mod. Plast. Encycl. 55, 51 (1978) 7. : Die Bestandigkeit von Plaste und Gummi. 2: Mold-Release Agents 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. 18. 19. 20. 21. 22. 23. 24. 25. 26. 27. 28. 29. 30. 31. 32. 33. 34. 49 Matlack, J. , Metzger, P. : J. Polyrn, Sci. : SPE J. 23, 71 (1967) Van Veersen, J. : Plastics 21,328 (1968) Andrews, K. E. , Wain, B. J. : Brit. Plast. : Plast. Kaustch. : Polim. Tworz .

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Additives for Plastics by J. à těpek, H. Daoust (auth.)

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